Current Conditions

La Unión, La Union

86°F30°C

Hot

Feels like96°F35°C

Wind

SSW 3 mph5 km/h

Humidity

69%

Cloud Cover

62%

As of Tuesday, September 8, 2026 at 8:45 PM CST

Today's Outlook

Night

Partly cloudy, with a low around 83°F28°C. Breezy from the ENE at 5 to 7 mph8 to 12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 99°F37°C	Low 82°F28°CFeels 85°F30°C	Precip 0 in0 mm—	Cloud 27%	Wind ENE 7 mph11 km/h	Wednesday: Mostly clear and hot, with a high of 99°F37°C and morning low of 82°F28°C. Breezy from the ENE at 8 to 9 mph13 to 15 km/h. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 83°F28°C. Breezy from the ENE at 5 to 7 mph8 to 12 km/h.
Hot	High 97°F36°CFeels 103°F39°C	Low 82°F28°CFeels 86°F30°C	Precip 0 in0 mm—	Cloud 25%	Wind ESE 6 mph9 km/h	Thursday: Mostly clear and hot, with a high of 97°F36°C and morning low of 82°F28°C. Light wind from the E around 6 mph9 km/h. Heat risk in the afternoon. Thursday Night: Partly cloudy, with a low around 83°F28°C. Breezy from the SE at 5 to 7 mph9 to 12 km/h.
Drizzle	High 96°F36°CFeels 103°F40°C	Low 82°F28°CFeels 87°F31°C	Precip 0.02 in0.6 mm31%	Cloud 41%	Wind ESE 4 mph7 km/h	Friday: Partly cloudy and hot, with a high of 96°F36°C and morning low of 82°F28°C — feels like 104°F40°C. Light wind from the E around 5 mph8 km/h. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 82°F28°C. Light wind from the WSW around 4 mph6 km/h. 31% chance of drizzle in the evening.
Showers	High 95°F35°CFeels 104°F40°C	Low 82°F28°CFeels 88°F31°C	Precip 0.05 in1.3 mm50%	Cloud 40%	Wind E 4 mph7 km/h	Saturday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 82°F28°C — feels like 104°F40°C. Breezy from the E at 5 to 7 mph9 to 11 km/h. 13% chance of drizzle in the afternoon. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 83°F28°C. Light wind from the E around 3 mph5 km/h. 50% chance of showers in the evening.
Hot	High 96°F36°CFeels 100°F38°C	Low 82°F28°CFeels 87°F31°C	Precip 0.01 in0.2 mm7%	Cloud 63%	Wind E 7 mph12 km/h	Sunday: Mostly cloudy and hot, with a high of 96°F36°C and morning low of 82°F28°C. Breezy from the ENE at 8 to 10 mph13 to 16 km/h. Heat risk in the afternoon. Sunday Night: Mostly cloudy, with a low around 83°F28°C. Breezy from the E at 6 to 8 mph10 to 12 km/h.
Drizzle	High 96°F36°CFeels 102°F39°C	Low 82°F28°CFeels 85°F30°C	Precip 0.01 in0.3 mm18%	Cloud 81%	Wind ENE 7 mph11 km/h	Monday: Overcast and hot, with a high of 96°F36°C and morning low of 82°F28°C — feels like 102°F39°C. Breezy from the ENE at 8 to 9 mph12 to 14 km/h. Heat risk in the afternoon. Monday Night: Overcast, with a low around 83°F29°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 18% chance of drizzle in the evening.
Light Rain	High 96°F36°CFeels 102°F39°C	Low 82°F28°CFeels 87°F30°C	Precip 0.04 in1 mm37%	Cloud 72%	Wind ENE 5 mph9 km/h	Tuesday: Mostly cloudy and hot, with a high of 96°F36°C and morning low of 82°F28°C — feels like 102°F39°C. Breezy from the ENE at 6 to 7 mph10 to 12 km/h. Heat risk in the afternoon. Tuesday Night: Mostly cloudy, with a low around 83°F28°C. Light wind from the ENE around 4 mph7 km/h. 37% chance of light rain in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	99°F37°C	82°F28°C Feels 85°F30°C	0 in0 mm· —	27%	Hot	ENE 7 mph11 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 82°F28°C. Breezy from the ENE at 8 to 9 mph13 to 15 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 83°F28°C. Breezy from the ENE at 5 to 7 mph8 to 12 km/h.
	ThursdaySep 10	97°F36°C Feels 103°F39°C	82°F28°C Feels 86°F30°C	0 in0 mm· —	25%	Hot	ESE 6 mph9 km/h
DayMostly clear and hot, with a high of 97°F36°C and morning low of 82°F28°C. Light wind from the E around 6 mph9 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 83°F28°C. Breezy from the SE at 5 to 7 mph9 to 12 km/h.
	FridaySep 11	96°F36°C Feels 103°F40°C	82°F28°C Feels 87°F31°C	0.02 in0.6 mm· 31%	41%	Drizzle	ESE 4 mph7 km/h
DayPartly cloudy and hot, with a high of 96°F36°C and morning low of 82°F28°C — feels like 104°F40°C. Light wind from the E around 5 mph8 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 82°F28°C. Light wind from the WSW around 4 mph6 km/h. 31% chance of drizzle in the evening.
	SaturdaySep 12	95°F35°C Feels 104°F40°C	82°F28°C Feels 88°F31°C	0.05 in1.3 mm· 50%	40%	Showers	E 4 mph7 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 82°F28°C — feels like 104°F40°C. Breezy from the E at 5 to 7 mph9 to 11 km/h. 13% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 83°F28°C. Light wind from the E around 3 mph5 km/h. 50% chance of showers in the evening.
	SundaySep 13	96°F36°C Feels 100°F38°C	82°F28°C Feels 87°F31°C	0.01 in0.2 mm· 7%	63%	Hot	E 7 mph12 km/h
DayMostly cloudy and hot, with a high of 96°F36°C and morning low of 82°F28°C. Breezy from the ENE at 8 to 10 mph13 to 16 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 83°F28°C. Breezy from the E at 6 to 8 mph10 to 12 km/h.
	MondaySep 14	96°F36°C Feels 102°F39°C	82°F28°C Feels 85°F30°C	0.01 in0.3 mm· 18%	81%	Drizzle	ENE 7 mph11 km/h
DayOvercast and hot, with a high of 96°F36°C and morning low of 82°F28°C — feels like 102°F39°C. Breezy from the ENE at 8 to 9 mph12 to 14 km/h. Heat risk in the afternoon. NightOvercast, with a low around 83°F29°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 18% chance of drizzle in the evening.
	TuesdaySep 15	96°F36°C Feels 102°F39°C	82°F28°C Feels 87°F30°C	0.04 in1 mm· 37%	72%	Light Rain	ENE 5 mph9 km/h
DayMostly cloudy and hot, with a high of 96°F36°C and morning low of 82°F28°C — feels like 102°F39°C. Breezy from the ENE at 6 to 7 mph10 to 12 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 83°F28°C. Light wind from the ENE around 4 mph7 km/h. 37% chance of light rain in the evening.
	WednesdaySep 16	96°F35°C Feels 102°F39°C	82°F28°C Feels 87°F30°C	0.04 in1 mm· 40%	56%	Showers	ENE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 96°F35°C and morning low of 82°F28°C — feels like 102°F39°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 83°F28°C. Light wind from the ENE around 5 mph8 km/h. 40% chance of showers in the evening.
	ThursdaySep 17	95°F35°C Feels 101°F38°C	82°F28°C Feels 86°F30°C	0.06 in1.6 mm· 37%	60%	Showers	E 5 mph9 km/h
DayMostly cloudy and hot, with a high of 95°F35°C and morning low of 82°F28°C — feels like 100°F38°C. Breezy from the E at 6 to 8 mph10 to 12 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 82°F28°C. Light wind from the ENE around 5 mph7 km/h. 37% chance of showers in the evening.
	FridaySep 18	95°F35°C Feels 101°F39°C	82°F28°C Feels 87°F30°C	0.08 in2 mm· 48%	65%	Showers	E 4 mph7 km/h
DayMostly cloudy and hot, with a high of 95°F35°C and morning low of 82°F28°C — feels like 102°F39°C. Light wind from the E around 5 mph8 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 82°F28°C. Light wind from the SSE around 4 mph6 km/h. 48% chance of light rain throughout the night.
	SaturdaySep 19	93°F34°C Feels 101°F38°C	82°F28°C Feels 88°F31°C	0.19 in4.8 mm· 66%	77%	Rain	S 4 mph6 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 82°F28°C — feels like 100°F38°C. Breezy from the SSE at 4 to 7 mph7 to 11 km/h. 16% chance of drizzle in the morning. Heat risk in the afternoon. NightOvercast, with a low around 82°F28°C. Light wind from the WSW around 4 mph6 km/h. 66% chance of rain throughout the night.
	SundaySep 20	92°F33°C Feels 101°F38°C	80°F27°C	0.4 in10.1 mm· 67%	85%	Rain	SSW 4 mph6 km/h
DayMostly cloudy and hot, with a high of 92°F33°C and morning low of 80°F27°C — feels like 100°F38°C. Breezy from the S at 4 to 7 mph7 to 11 km/h. 33% chance of light rain throughout the day. Heat risk in the afternoon. NightOvercast, with a low around 81°F27°C. Light wind from the SW around 3 mph6 km/h. 67% chance of rain throughout the night.
	MondaySep 21	89°F32°C Feels 99°F37°C	79°F26°C	0.64 in16.2 mm· 76%	89%	Rain	S 4 mph6 km/h
DayOvercast and hot, with a high of 89°F32°C and morning low of 79°F26°C — feels like 99°F37°C. Light wind from the S around 4 mph6 km/h. 53% chance of rain throughout the day. Heat risk in the afternoon. NightOvercast, with a low around 79°F26°C. Light wind from the SSW around 3 mph5 km/h. 76% chance of rain throughout the night.
	TuesdaySep 22	89°F32°C Feels 99°F37°C	79°F26°C	0.67 in17.1 mm· 78%	89%	Rain	SSE 4 mph6 km/h
DayOvercast and hot, with a high of 89°F32°C and morning low of 79°F26°C — feels like 99°F37°C. Light wind from the SSE around 4 mph6 km/h. 49% chance of light rain throughout the day. Heat risk in the afternoon. NightOvercast, with a low around 79°F26°C. Light wind from the SSE around 3 mph5 km/h. 78% chance of rain throughout the night.
	WednesdaySep 23	88°F31°C Feels 98°F37°C	79°F26°C	0.54 in13.7 mm· 76%	90%	Rain	SE 4 mph6 km/h
DayOvercast and hot, with a high of 88°F31°C and morning low of 79°F26°C — feels like 99°F37°C. Light wind from the SE around 4 mph6 km/h. 58% chance of rain throughout the day. Heat risk in the afternoon. NightOvercast, with a low around 79°F26°C. Light wind from the SSE around 3 mph5 km/h. 76% chance of rain throughout the night.

Nearby Cities

San Miguel25 mi40 km San Francisco30 mi49 km San Rafael Oriente34 mi55 km Usulután40 mi65 km Santiago de María43 mi69 km Puerto El Triunfo48 mi77 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 13.3392°N, 87.8433°W·Elevation: 10m·Timezone: America/El_Salvador·Population: 26,807